:root {
  --bs-primary: #2563eb;
  --bs-primary-rgb: 37, 99, 235;
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.4);
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  color: #1e293b;
  line-height: 1.6;
  letter-spacing: -0.01em;
}

.py-6 {
  padding-top: 5rem !important;
  padding-bottom: 5rem !important;
}

.icon-square {
  width: 3rem;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.75rem;
  font-size: 1.5rem;
}

.navbar-brand {
  letter-spacing: -0.5px;
}

.nav-link {
  font-weight: 500;
  transition: color 0.2s ease;
}

.card {
  transition: transform 0.3s ease, shadow 0.3s ease;
}

.card {
  border: 1px solid rgba(0,0,0,0.05) !important;
  transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.08) !important;
  border-color: rgba(37, 99, 235, 0.2) !important;
}

.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
}

.section-title {
  position: relative;
  display: inline-block;
  padding-bottom: 1rem;
}

.section-title::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: var(--bs-primary);
  border-radius: 2px;
}

.quote-accent {
  border-left: 4px solid var(--bs-primary);
  padding-left: 1.5rem;
  font-style: italic;
  background: rgba(37, 99, 235, 0.03);
  padding: 1.5rem;
  border-radius: 0 1rem 1rem 0;
}

header {
  background: radial-gradient(circle at 100% 0%, rgba(37, 99, 235, 0.08) 0%, transparent 50%), radial-gradient(circle at 0% 100%, rgba(37, 99, 235, 0.05) 0%, transparent 50%);
  position: relative;
  overflow: hidden;
}

header::before {
  content: "";
  position: absolute;
  top: -10%;
  right: -5%;
  width: 400px;
  height: 400px;
  background: var(--bs-primary);
  filter: blur(120px);
  opacity: 0.1;
  z-index: -1;
}

#result {
  background: #1e1e1e !important;
}

code {
  font-family: 'Courier New', Courier, monospace;
  display: block;
  white-space: pre-wrap;
}

.btn-primary {
  background-color: var(--bs-primary);
  border-color: var(--bs-primary);
}

.btn-primary:hover {
  background-color: #2b5b87;
  border-color: #2b5b87;
}

.bg-primary-subtle {
  background-color: rgba(var(--bs-primary-rgb), 0.1) !important;
}

.text-primary {
  color: var(--bs-primary) !important;
}

.hover-lift {
  transition: transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
}

.hover-lift:hover {
  transform: translateY(-5px);
  box-shadow: 0 1rem 3rem rgba(0, 0, 0, .1) !important;
}

.navbar .nav-link.active {
  color: var(--bs-primary);
  font-weight: 700;
}

.quick-nav {
  background-color: #f8f9fa;
  border-bottom: 1px solid #dee2e6;
  padding: 0.5rem 0;
}

.quick-nav .nav-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: #6c757d;
  padding: 0.5rem 1.25rem;
  border-radius: 50px;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.quick-nav .nav-link:hover {
  color: var(--bs-primary);
  background-color: rgba(var(--bs-primary-rgb), 0.05);
}

.quick-nav .nav-link.active {
  background-color: var(--bs-primary);
  color: white !important;
  box-shadow: 0 4px 10px rgba(var(--bs-primary-rgb), 0.2);
}

.quick-nav .nav-link i {
  font-size: 1.1rem;
}

.accordion-button:not(.collapsed) {
  background-color: rgba(37, 99, 235, 0.03);
  color: var(--bs-primary);
}

.accordion-button::after {
  background-size: 1rem;
}

.ls-tight {
  letter-spacing: -0.025em;
}